package com.charwayh.hellomybatisplus.handle;

import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.stereotype.Component;

import java.util.Date;

/**
 * @author charwayH
 */
@Slf4j  //日志
@Component // 把处理器添加到IOC容器中
public class MyMetaObjectHandler implements MetaObjectHandler {
    /**
     * 插入时填充策略
     */
    @Override
    public void insertFill(MetaObject metaObject) {
        log.info("start insertFill ......");
        // setFieldValByName(String fieldName【实体类字段】, Object fieldVal, MetaObject metaObject)
        this.setFieldValByName("createTime",new Date(),metaObject);
        this.setFieldValByName("updateTime",new Date(),metaObject);
    }

    /**
     * 更新时填充策略
     */
    @Override
    public void updateFill(MetaObject metaObject) {
        log.info("start updateFill ......");
        this.setFieldValByName("updateTime",new Date(),metaObject);
    }
}
